Development of sprayable engineered cementitious composites

Title: Development of sprayable engineered cementitious composites
Author(s): Y. Y. Kim, V. C. Li, H. J. Kong
Paper category : conference
Book title: International Workshop High Performance Fiber Reinforced Cement Composites
Editor(s): A. E. Naaman and H. W. Reinhardt
Print-ISBN: 2-912143-38-1
e-ISBN: 2912143799
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 233 - 243
Total Pages: 11
Nb references: 10
Language: English

Abstract: Sprayable engineered cementitious composite (ECC), which exhibits tensile strain-hardening behavior in the hardened state, while maintaining sprayable properties in the fresh state, has been developed by employing parallel control of micromechanical design and rheological process design. In the development concept of sprayable ECC, micromechanics is adopted to properly select the matrix, fiber, and interface properties to exhibit strain-hardening and multiple cracking behaviors in the composites. With the selected ingredient materials, the pumpability and sprayability of ECC are then realized by the controlled rheological properties of fresh matrix and the uniform dispersion of fibers. A series of spray test and deformability test reveals that the sprayable ECC developed in this study exhibits superior pumpability, sprayability and rebound property. Uniaxial tensile tests demonstrate that the mechanical performance of sprayed ECC is comparable to that of ECC cast with external consolidation.

Online publication: 2003-04-28
Publication type : full_text
Public price (Euros): 0.00